Process planning knowledge representation is an important part of CAPP.
工艺知识表达是CAPP系统的重要部分。
Additionally, this paper also discusses the rational contents and expression way of planning knowledge.
同时,提出了领域知识的合理内容及表达方式。
According to the openness of process planning knowledge base, this paper proposes a hierarchy knowledge base model based on open structure.
根据工艺设计知识库的开放性要求,提出了一个基于开放式结构的层次化知识库模型。
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